Ferric/ferrous ratio in silicate melts: a new model for 1 atm data with special emphasis on the effects of melt composition
Sign Up to like & getrecommendations! Published in 2018 at "Contributions to Mineralogy and Petrology"
DOI: 10.1007/s00410-018-1524-8
Abstract: The effect of MgO and total FeO on ferric/ferrous ratio in model multicomponent silicate melts was investigated experimentally in the temperature range 1300–1500 °C at 1 atm total pressure in air. We demonstrate that the addition of… read more here.
Keywords: melt composition; ratio; silicate melts; model ... See more keywords
Bulk solubility and speciation of H 2 O in silicate melts
Sign Up to like & getrecommendations! Published in 2018 at "Chemical Geology"
DOI: 10.1016/j.chemgeo.2018.01.008
Abstract: Abstract The bulk solubility and speciation of H2O in silicate melts of virtually any composition is predicted from first principles with a satisfactory precision. The solubility of molecular water is first predicted from the Scaling… read more here.
Keywords: bulk solubility; solubility speciation; silicate melts; solubility ... See more keywords
Coordination of Zr4+/Hf4+/Nb5+/Ta5+ in silicate melts: insight from first principles molecular dynamics simulations
Sign Up to like & getrecommendations! Published in 2020 at "Chemical Geology"
DOI: 10.1016/j.chemgeo.2020.119814
Abstract: Abstract The highly fractionated granites related to the ore deposits of strategic critical metals such as Zr, Hf, Nb and Ta are usually rich in fluorine, but how fluorine influences the magmatic ore-forming processes of… read more here.
Keywords: silicate melts; hf4 nb5; nb5 ta5; zr4 hf4 ... See more keywords
First-principles computation of diffusional Mg isotope fractionation in silicate melts
Sign Up to like & getrecommendations! Published in 2020 at "Geochimica et Cosmochimica Acta"
DOI: 10.1016/j.gca.2020.08.028
Abstract: Abstract Diffusional isotope fractionation occurs in geochemical processes (such as magma mixing, bubble growth, and crystal growth), even at magmatic temperatures. Isotopic mass dependence of diffusion is commonly expressed as D i D j =… read more here.
Keywords: isotope; diffusional isotope; silicate melts; first principles ... See more keywords
The oxidation state of chromium in basaltic silicate melts
Sign Up to like & getrecommendations! Published in 2021 at "Geochimica et Cosmochimica Acta"
DOI: 10.1016/j.gca.2021.03.024
Abstract: Abstract Cr3+/Cr2+ in melts in the systems CaO-MgO-Al2O3-SiO2±Na2O±K2O doped with Cr added as 0.5 wt% Cr2O3 were determined as a function of oxygen fugacity (fO2) at 1400°C by XANES spectroscopy of their quenched glasses, using… read more here.
Keywords: silicate; silicate melts; cr3 cr2; cr2 ... See more keywords
Diffusion across the glass transition in silicate melts: Systematic correlations, new experimental data for Sr and Ba in calcium-aluminosilicate glasses and general mechanisms of ionic transport
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Non-crystalline Solids"
DOI: 10.1016/j.jnoncrysol.2016.10.013
Abstract: Abstract Viscosity and diffusivity of silicate melts and glasses are related to each other through relaxation timescales. The systematic is explored based on published data. Diffusion coefficients for Sr and Ba were measured in calcium… read more here.
Keywords: diffusion; glass; silicate melts; diffusion coefficients ... See more keywords
Behavior and properties of water in silicate melts under deep mantle conditions
Sign Up to like & getrecommendations! Published in 2021 at "Scientific Reports"
DOI: 10.1038/s41598-021-90124-7
Abstract: Water (H2O) as one of the most abundant fluids present in Earth plays crucial role in the generation and transport of magmas in the interior. Though hydrous silicate melts have been studied extensively, the experimental… read more here.
Keywords: water; properties water; behavior properties; silicate melts ... See more keywords